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		内蒙古巴彦淖尔市临河区富硒耕地硒形态特征及其影响因素
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			Speciation of selenium in the selenium-rich cultivated land in Linhe District, Bayannur City, Inner Mongolia and its influencing factors
			 
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		 图1. 研究区位置示意(a)及土壤样点分布(b)  | 
	
Fig.1. Traffic location (a) and topsoil sample distribution (b) in the study area  | 
	
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